kubernetes-network-tester

Tests Kubernetes pod-to-pod network connectivity using Prometheus and blackbox-exporter.

Usage

Download from the [Releases][release] page, then run:

./kubernetes-network-tester \
  -numhosts 3
  -resolver $(kubectl get svc -n kube-system kube-dns -o jsonpath='{.spec.clusterIP}'):53 \
  checksvc1 checksvc2 checksvc3

This will create daemonsets and services named checksvc2, checksvc2, and checksvc3. It will also create a Prometheus deployment and service named 'prometheus'.

The Prometheus configuration is designed to have every checksvc pod query every checksvc pod. kubernetes-network-tester will exit with an error if it can't validate every pod-to-pod connection via Prometheus before it times out.